ASTM D7320-08

1.1 This test method covers an engine test procedure for evaluating automotive engine oils for certain high-temperature performance characteristics, including oil thickening, varnish deposition, oil consumption, as well as engine wear. Such oils include both single viscosity grade and multiviscosity grade oils that are used in both spark-ignition, gasoline-fueled engines, as well as in diesel engines.

Note 1 - Companion test methods used to evaluate engine oil performance for specification requirements are discussed in SAE J304.

1.2 The values stated in SI units shall be regarded as the standard. The values given in parentheses are provided for information purposes only. The only exception is where there is no direct SI equivalent such as screw threads, national pipe threads/diameters, and tubing size.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are provided in 6.14.1.1 and 7.1.

1.4 This test method is arranged as follows:

	Section
Introduction
Scope	1
Referenced Documents	2
Terminology	3
Summary of Test Method	4
Significance and Use	5
Apparatus	6
Laboratory	6.1
Drawings	6.2
Specified Equipment	6.3
Test Engine	6.4
Engine Parts	6.4.1
Engine Speed and Load Control	6.5
Fluid Conditioning Module	6.6
Engine Cooling System	6.6.1
Flushing Tank	6.7
Coolant Mixing Tank	6.8
Condenser Cooling Systems	6.9
Engine Oil-Cooling System	6.10
Fuel System	6.11
Induction Air Supply Humidity, Temperature, and Pressure	6.12
Temperature Measurement	6.13
Thermocouple Location	6.13.1
Air-to-Fuel Ratio Determination	6.14
Injector Flow Testing	6.14.1
Exhaust and Exhaust Back Pressure Systems	6.15
Blowby Flow Rate Measurement	6.16
Pressure Measurement and Sensor Location	6.17
Reagents and Materials	7
Test Fuel	7.1
Engine and Condenser Coolant	7.2
Coolant Additive	7.3
Coolant Preparation	7.4
Pre-Test Cleaning Materials	7.5
Sealing and Anti-seize Compounds	7.6
Test Oil Sample Requirements	8
Preparation of Apparatus	9
Condenser Cleaning	9.1
Intake Manifold Cleaning	9.2
Cleaning of Engine Parts (other than the block and heads)	9.3
Connecting Rod Cleaning	9.4
Engine Block Cleaning	9.5
Cylinder Head Cleaning	9.6
Engine Build-up Procedure	9.7
General Information	9.7.1
Special Parts	9.7.2
Hardware Information	9.7.3
Fastener Torque Specifications and Torquing Procedures	9.7.4
Main Bearing Cap Bolts	9.7.4.1
Cylinder Head Bolts	9.7.4.2
Torques for Miscellaneous Bolts, Studs, and Nuts	9.7.4.3
Parts Replacement	9.8
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